To provide an endless body guide unit capable of simplifying mounting work.

The roller conveyor 11 is provided with a pair of conveyor frames 12a and 12b. The endless body guide unit 20 is mounted on a one conveyor frame 12a. The endless body guide unit 20 has a guide part 58 guiding an endless body 23 and a holding part 69 holding a spindle 21 of a conveyance roller 22 rotated by power from the endless body 23. A spindle 21 one end part of the conveyance roller 22 is held by the holding part 69, and a spindle 21 another end part is held by the other conveyor frame 12b. There is no need to adjust a mounting position of the endless body guide unit 20 for setting a distance between the conveyance roller and the guide part at a desired distance.